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3 years ago

Find all the real square roots of 0.0016.

Mathematics

1 answer:

Hatshy [7]3 years ago

6 0

Hello: here is a solution

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The battery standby duration (in hours) of a new model of cell phone is known to be normally distributed. Ten pieces of such new

kap26 [50]

Answer:

$\mu = 47.17$

$\sigma = 2.31$

Step-by-step explanation:

Solving (a): The population mean

This is calculated as:

$\mu = \frac{\sum x}{n}$

So, we have:

$\mu = \frac{48.2+ 47.8 +45.6 +47.2 +49.3+51.2 +44.2 +45.4 +49.2 +43.6}{10}$

$\mu = \frac{471.7}{10}$

$\mu = 47.17$

Solving (b): The population standard deviation

This is calculated as:

$\sigma = \sqrt{\frac{\sum (x - \mu)^2}{n}}$

So, we have:

$\sigma = \sqrt{\frac{(48.2-47.17)^2 + (47.8-47.17)^2 +.........+(43.6-47.17)^2}{10}}$

$\sigma = \sqrt{\frac{53.521}{10}}$

$\sigma = \sqrt{5.3521$

$\sigma = 2.31$

4 0

3 years ago

Which of the following statements is false?A. A rhombus is a quadrilateral.B. A quadrilateral is a polygon with four angles.C. I

ololo11 [35]

We have the following statements and results.

A. A rhombus is a quadrilateral.

True. A rhombus is a quadrilateral all of which sides have the same length.

B. A quadrilateral is a polygon with four angles.

True. A polygon is a plane figure with at least three straight sides and angles, and typically five or more.

C. In quadrilateral PQRS, ∠P and ∠S are opposite angles.

False. If we have a quadrilateral PQRS, that means that ∠P and ∠S are consecutive angles, not opposite.

D. The diagonals of a rhombus are perpendicular and bisect each other.

True. It is true that the diagonals of a rhombus are always perpendicular and bisect each other.

Answer.

Statement C is false.

8 0

1 year ago

Which equation represents the graph of Charli's line? A. y= -3/4x-3. B. Y= 3/4x- 4. C. y = -4/3x- 4. D. y= 4/3x- 3. LOOK AT THE

natali 33 [55]

Jwpn die B rasenya. Kalau salah maaf ye.

5 0

3 years ago

Write down the next term in each of these sequences. a) 19, 15, 11, 7, 3,

Alekssandra [29.7K]

Answer:

-1

Step-by-step explanation:

Find the difference of each sequence

19 - 15 = 4

15 - 11 = 4

11 - 7 = 4

7- 3 = 4

3 - ? = 4

Subtract 4 from the 3

3 - 4 = -1

Therefore, the next term is -1

5 0

2 years ago

arnold earns $1500 per month plus 5% commission on his sales. last month, his total income was $2700. write an equation

docker41 [41]

Answer:

2700=1500+0.05x

Step-by-step explanation:

4 0

3 years ago